no the reason why people are less vocal about AST is because it is perfectly viable in most content AND is only unpopular among the 1-3% of the playerbase who have savage on farm.
Back on topic, when I queue with tank, healers are on demand, and when I queue with my healer, tanks are on demand. Even when tanks are on demand tho, I have insta pop with my healers. Which isn’t always the case when on tank.